Chemistry Coal & Petroleum Part 12 (Questions) Class 8 VIII

TL;DR

This video discusses the advantages of using CNG and LPG as fuels, the process of formation of coal from dead vegetation, and the characteristics and uses of coke.

Transcript

hello friends this video on coal and petroleum part 12 is brought to you by example comm know about here from example so with this we have reached towards the end of this lesson on coal and petroleum so let us quickly look at some of the questions question number one what are the advantages of using CNG and mpg as fuels so the most important advant... Read More

Key Insights

• 😘 CNG and LPG fuels are advantageous due to their low environmental pollution and residue.
• ✋ Coal is formed through the carbonization process, involving high temperature and pressure.
• ❓ Coke, a byproduct of coal, is widely used in steel manufacturing as a reducing agent.
• 🫢 Fossil fuels, including coal, petroleum, and natural gas, are non-renewable and formed over millions of years.
• 💀 Petroleum is formed from dead organisms in the oceans through high temperature and pressure.
• ⛽ Fossil fuels are presently limited stock and exhaustible natural resources.
• ❓ Petroleum refining is the process of separating different constituents from petroleum.

Questions & Answers

Q: What are the advantages of using CNG and LPG as fuels?

CNG and LPG cause less environmental pollution, leave minimal residue when burnt, and are easy to transport through pipelines.

Q: How is coal formed from dead vegetation? What is this process called?

Coal is formed through carbonization, where dead plants buried under soil undergo high temperature and pressure, losing water and turning into coal.

Q: What is the petroleum product used for surfacing roads?

Bitumen is used for surfacing roads as it acts as a binder, creating a convolute when mixed with aggregate particles.

Q: What are the characteristics and uses of coke?

Coke is a porous black substance left after destructive distillation of coal, containing around 60% carbon. It is used as a reducing agent in steel manufacturing and is more efficient and less polluting than coal.

Summary & Key Takeaways

• CNG and LPG fuels have advantages of causing less environmental pollution, leaving minimal residue when burnt, and being easy to transport through pipelines.

• Coal is formed through the process of carbonization, where dead vegetation is buried under soil, undergoes high temperature and pressure, and turns into coal.

• Coke is a porous black substance left after destructive distillation of coal, containing around 60% carbon, and is used as a reducing agent in steel manufacturing.